Originally Posted by gunzo
Originally Posted by JB in SC
Looks like a pre number K-38 Target Masterpiece, should have SN marked on the the cylinder, under the barrel on the flat, on the frame, and inside the stocks. Nice S&W.

Yeah, pre model 15. The hammer says it's a 4 or 5 screw. A pic of the other side would be a bit more telling.

Pre model number 17, the 15 is the K-38 Combat Masterpiece with the 4” barrel.